[Tireiron]

My big question is, you already have a 5mt that is setup correctly and working, why do you want to swap to a different 5mt? The WRX 5mt is no stronger than the legacy 5mt. You will not get a better final drive as the WRX final is 3.9 and the legacy is most likely 4.1. Also if the legacy 5mt breaks they are still easier to find in good condition than WRX ones.

So again, why exactly do you want to swap from one 5mt to another 5mt?